[Bug 80773] corruption after resuming from hibernation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80773

--- Comment #2 from Harald Judt <h.judt at gmx.at> ---
I'm not quite sure what the real problem is/was in bug #65496. At the end of
that report, "[PATCH] drm/i915: Undo gtt scratch pte unmapping again" is
mentioned. Shall I revert that patch, is that your suggestion? Lenovo T440s
BIOS version is GJET60WW (2.10).

3.13.11 does not produce these corruptions, it only hangs sometimes when
starting hibernation at freeing memory, could be some freezing problem, but I
believe it is still driver related.

The real issues start with 3.14 (as explained in bug #80727), and the
corruptions appear only in 3.15.2 AFAICT so far. I believe I've not seen these
corruptions with S3, but that may be another thing to thoroughly investigate...

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